A follow up question. Is there a limit to how big the log can
be? For one of my servers, I had to increase it to 8gig. The
output from the command (which I no longer have) indicated that
only the 2gig will be used. I ended up creating 4 logs of 2gig
each...but just wondering if there is a limit or if several
smaller ones are better then one big one?

sure - create a normal small logical volume as a jfs2log and the logical volume you need the log for ...
when you create the filesystem on the logical volume you can point to the created jfs2log
easiest way is using smitty for this ...

It's serious cause in the event of a failure AIX will try to
apply log device entries (as a procedure of redo log in
databases) but will not find all the log records. I think you
need to do some work with the spaces given to your jfslog
devices. As a general rule jsflogs (or jfs2logs) should be 2MB
for each GB to be logged. So if your server has a 128GB FS
(let's say a DB2 DB2 container) the jfslog device should be at
least 256MB and be placed on the disk with less I/O.

You can also use INLINE logs devices. AIX applies some special
procedure to size them, but the problem is that you have no
posibilities to place on another disk with less activity.